Stockholders' Equity - Additional Information (Detail) - USD ($)		1 Months Ended		12 Months Ended
	Nov. 01, 2014	Mar. 31, 2015	Jan. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Class of Stock [Line Items]
Common Stock, Shares Authorized				100,000,000	100,000,000
Preferred Stock, Shares Authorized				10,000,000	10,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 30.40
Proceeds from Issuance of Common Stock				$ 1,835,000	$ 6,021,144
Cash Paid To Holder For Waiver				$ 35,000
Ladenburg Thalmann Co. Inc [Member]
Class of Stock [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights				5,762
Class of Warrant or Right, Exercise Price of Warrants or Rights				$ 5.75
Cash Paid To Placement Agent				$ 106,000
Additional Cash paid to Placement Agent				$ 50,000
Additional Class Of Warrant Or Right Issued				10,870
Fortress Agreement [Member]
Class of Stock [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights				$ 2.54
Purchase Agreement [Member]
Class of Stock [Line Items]
Sale of Stock, Price Per Share		$ 4.60
Proceeds from Issuance of Common Stock		$ 2,150,000
Stock Issued During Period, Shares, New Issues		467,392
Warrant [Member]
Class of Stock [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights			23,858
Fair Value Adjustment of Warrants	$ 164,196		$ 348,963
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 20.70		$ 30.40
Warrants To Purchase Shares Of Common Stock	27,750
Warrant [Member] | Fortress Agreement [Member]
Class of Stock [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 22.70
Maximum [Member]
Class of Stock [Line Items]
Common Stock, Shares Authorized				110,000,000